Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Patent
1992-03-13
1994-09-06
Skaggs, H. Grant
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
209588, 209939, B07B 5342
Patent
active
053440269
ABSTRACT:
A method of sorting plastic items by measuring the effect an item has on light directed at a stream of items from a light source, then selectively removing items from the stream based on a comparison of the light measured and the light emitted from the detector is provided. The invention also includes an apparatus for separating plastic items which comprises a light source, a detector for measuring the effect an individual item has on light emitted from the detector, and sortation means for selectively removing items from the stream based on a comparison of the light emitted by the light source and that measured at the detector. A method for separating single plastic bottles from engaged interlocked bottle clusters comprising directing an air jet at an item sufficiently forceful to displace a single bottle to a collection means but insufficiently forceful to displace an interlocked bottle cluster is also provided.
REFERENCES:
patent: 4365719 (1982-12-01), Kelly
patent: 4373638 (1983-02-01), Schappet
patent: 4919534 (1990-04-01), Reed
patent: 5090576 (1992-02-01), Menter
patent: 5141110 (1992-08-01), Trischan et al.
Booth Hubert J.
Steagall, III Paul H.
Wright Michael W.
Skaggs H. Grant
Wellman, Inc.
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